Question

Which best explains mantle convection?
Warmer material in the mantle moves down, and cooler material in the mantle moves up. Warmer material in the mantle moves down, and cooler material in the mantle moves up. Warmer and cooler material in the mantle move up. Warmer and cooler material in the mantle move up. Cooler material in the mantle moves down, and warmer material in the mantle moves up. Cooler material in the mantle moves down, and warmer material in the mantle moves up. Warmer and cooler material in the mantle move down. Warmer and cooler material in the mantle move down.
Answer
Which of these pieces of evidence did Alfred Wegener cite to support his hypothesis of continental drift?
The continents fit together like a puzzle. The continents fit together like a puzzle. Contraction of the Earth caused folded mountains to form. Contraction of the Earth caused folded mountains to form. New oceanic crust formed between the northern and southern continents, pushing them apart. New oceanic crust formed between the northern and southern continents, pushing them apart. Similar fossils have been found at the bottom of the ocean and on land.
Answer
At which type of boundary is new oceanic crust created?
a convergent plate boundary a convergent plate boundary a divergent plate boundary a divergent plate boundary a transform plate boundary a transform plate boundary a subduction plate boundary
Answered by GPT 3.5
Cooler material in the mantle moves down, and warmer material in the mantle moves up.
Answered by GPT 3.5
Similar fossils have been found at the bottom of the ocean and on land.
Answered by GPT 3.5
A divergent plate boundary